2 dnl Initialize configure bits.
4 dnl Define OPTLEVEL='-O2' if new inlining code present.
7 AC_DEFUN(GLIBCPP_CONFIGURE, [
8 dnl Default to --enable-multilib
9 AC_ARG_ENABLE(multilib,
10 [ --enable-multilib build hella library versions (default)],
11 [case "${enableval}" in
14 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
15 esac], [multilib=yes])dnl
17 dnl We may get other options which we dont document:
18 dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
19 if test "[$]{srcdir}" = "."; then
20 if test "[$]{with_target_subdir}" != "."; then
21 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
23 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
26 glibcpp_basedir="[$]{srcdir}/$1"
28 AC_SUBST(glibcpp_basedir)
30 AM_INIT_AUTOMAKE(libstdc++, 2.90.8)
32 # Never versions of autoconf add an underscore to these functions.
33 # Prevent future problems ...
34 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
35 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
36 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
37 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
41 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
42 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
43 # are probably using a cross compiler, which will not be able to fully
44 # link an executable. This should really be fixed in autoconf
47 AC_DEFUN(LIB_AC_PROG_CC,
48 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
49 dnl Fool anybody using AC_PROG_CC.
50 AC_PROVIDE([AC_PROG_CC])
51 AC_CHECK_PROG(CC, gcc, gcc)
52 if test -z "$CC"; then
53 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
54 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
59 if test $ac_cv_prog_gcc = yes; then
61 dnl Check whether -g works, even if CFLAGS is set, in case the package
62 dnl plays around with CFLAGS (such as to build both debugging and
63 dnl normal versions of a library), tasteless as that idea is.
64 ac_test_CFLAGS="${CFLAGS+set}"
65 ac_save_CFLAGS="$CFLAGS"
68 if test "$ac_test_CFLAGS" = set; then
69 CFLAGS="$ac_save_CFLAGS"
70 elif test $ac_cv_prog_cc_g = yes; then
77 test "${CFLAGS+set}" = set || CFLAGS="-g"
83 # Can't just call these here as g++ requires libstc++ to be built....
86 # Likewise for AC_PROG_CXX.
87 AC_DEFUN(LIB_AC_PROG_CXX,
88 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
89 dnl Fool anybody using AC_PROG_CXX.
90 AC_PROVIDE([AC_PROG_CXX])
91 # Use CXX_libstdcxx so that we do not cause CXX to be cached with the
92 # flags that come in CXX while configuring libstdc++. They're different
93 # from those used for all other target libraries. If CXX is set in
94 # the environment, respect that here.
96 AC_CHECK_PROGS(CXX_libstdcxx, $CCC c++ g++ gcc CC cxx cc++, gcc)
99 test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
103 if test $ac_cv_prog_gxx = yes; then
105 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
106 dnl plays around with CXXFLAGS (such as to build both debugging and
107 dnl normal versions of a library), tasteless as that idea is.
108 ac_test_CXXFLAGS="${CXXFLAGS+set}"
109 ac_save_CXXFLAGS="$CXXFLAGS"
112 if test "$ac_test_CXXFLAGS" = set; then
113 CXXFLAGS="$ac_save_CXXFLAGS"
114 elif test $ac_cv_prog_cxx_g = yes; then
121 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
127 AC_CHECK_TOOL(AS, as)
128 AC_CHECK_TOOL(AR, ar)
129 AC_CHECK_TOOL(RANLIB, ranlib, :)
135 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
136 # at least currently, we never actually build a program, so we never
137 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
138 # fails, because we are probably configuring with a cross compiler
139 # which cant create executables. So we include AC_EXEEXT to keep
140 # automake happy, but we dont execute it, since we dont care about
146 # configure.host sets the following important variables
147 # glibcpp_cflags - host specific C compiler flags
148 # glibcpp_cxxflags - host specific C++ compiler flags
152 . [$]{glibcpp_basedir}/configure.host
154 case [$]{glibcpp_basedir} in
155 /* | [A-Za-z]:[/\\]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
156 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
159 # This does for the target what configure.host does for the host. In
160 # addition to modifying the same flags, it also sets up symlinks.
163 GLIBCPP_CFLAGS="[$]{glibcpp_cflags}"
164 GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}"
165 AC_SUBST(GLIBCPP_CFLAGS)
166 AC_SUBST(GLIBCPP_CXXFLAGS)
171 dnl Check to see if g++ can compile this library, and if so, if any version-
172 dnl specific precautions need to be taken.
174 dnl GLIBCPP_CHECK_COMPILER_VERSION
175 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
176 if test ! -f stamp-sanity-compiler; then
177 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
181 #if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
184 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to gcc-2.95 or above]))
186 AC_MSG_RESULT($gpp_satisfactory)
187 touch stamp-sanity-compiler
193 dnl Test for newer compiler features, or features that are present in newer
194 dnl compiler version but not older compiler versions should be placed
197 dnl Define WFMT_FLAGS='-fdiagnostics-show-location=once' if possible
199 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
200 dnl new inlining code or the new system_header pragma will die on -Werror.
201 dnl Leave it out by default and use maint-mode to use it.
203 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
204 dnl compiler supports it.
205 dnl GLIBCPP_CHECK_COMPILER_FEATURES
206 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
207 # All these tests are for C++; save the language and the compiler flags.
208 # The CXXFLAGS thing is suspicious, but based on similar bits
209 # found in GLIBCPP_CONFIGURE.
212 ac_test_CXXFLAGS="${CXXFLAGS+set}"
213 ac_save_CXXFLAGS="$CXXFLAGS"
215 # Check for maintainer-mode bits.
216 if test x"$USE_MAINTAINER_MODE" = xno; then
222 # Check for more sophisticated diagnostic control.
223 AC_MSG_CHECKING([for g++ that supports -fdiagnostics-show-location=once])
224 CXXFLAGS='-Werror -fdiagnostics-show-location=once'
225 AC_TRY_COMPILE(, [int foo;
226 ], [ac_gabydiags=yes], [ac_gabydiags=no])
227 if test "$ac_test_CXXFLAGS" = set; then
228 CXXFLAGS="$ac_save_CXXFLAGS"
230 # this is the suspicious part
233 if test x"$ac_gabydiags" = x"yes"; then
234 WFMT_FLAGS='-fdiagnostics-show-location=once'
236 AC_MSG_RESULT($ac_gabydiags)
238 # Check for -ffunction-sections -fdata-sections
239 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
240 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
241 AC_TRY_COMPILE(, [int foo;
242 ], [ac_fdsections=yes], [ac_fdsections=no])
243 if test "$ac_test_CXXFLAGS" = set; then
244 CXXFLAGS="$ac_save_CXXFLAGS"
246 # this is the suspicious part
249 if test x"$ac_fdsections" = x"yes" && x"$enable_debug" = x"no"; then
250 SECTION_FLAGS='-ffunction-sections -fdata-sections'
252 AC_MSG_RESULT($ac_fdsections)
257 AC_SUBST(SECTION_FLAGS)
262 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
263 dnl the native linker is in use, all variables will be defined to something
264 dnl safe (like an empty string).
266 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
267 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
269 dnl GLIBCPP_CHECK_LINKER_FEATURES
270 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
271 # If we're not using GNU ld, then there's no point in even trying these
272 # tests. Check for that first. We should have already tested for gld
273 # by now (in libtool), but require it now just to be safe...
276 AC_REQUIRE([AC_PROG_LD])
279 if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
280 # GNU ld it is! Joy and bunny rabbits!
282 # All these tests are for C++; save the language and the compiler flags.
283 # Need to do this so that g++ won't try to link in libstdc++
284 ac_test_CFLAGS="${CFLAGS+set}"
285 ac_save_CFLAGS="$CFLAGS"
286 CFLAGS='-x c++ -Wl,--gc-sections'
288 # Check for -Wl,--gc-sections
289 # XXX This test is broken at the moment, as symbols required for
290 # linking are now in libsupc++ (not built yet.....). In addition,
291 # this test has cored on solaris in the past. In addition,
292 # --gc-sections doesn't really work at the moment (keeps on discarding
293 # used sections, first .eh_frame and now some of the glibc sections for
294 # iconv). Bzzzzt. Thanks for playing, maybe next time.
295 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
303 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
304 if test "$ac_test_CFLAGS" = set; then
305 CFLAGS="$ac_save_CFLAGS"
307 # this is the suspicious part
310 if test "$ac_sectionLDflags" = "yes"; then
311 SECTION_LDFLAGS='-Wl,--gc-sections'
313 AC_MSG_RESULT($ac_sectionLDflags)
316 # Set linker optimization flags.
317 if test x"$ac_cv_prog_gnu_ld" = x"yes" && x"$enable_debug" = x"no"; then
318 OPT_LDFLAGS='-Wl,-O1'
321 AC_SUBST(SECTION_LDFLAGS)
322 AC_SUBST(OPT_LDFLAGS)
327 dnl Check to see if the (math function) argument passed is
328 dnl 1) declared when using the c++ compiler
329 dnl 2) has "C" linkage
331 dnl Define HAVE_CARGF etc if "cargf" is declared and links
333 dnl argument 1 is name of function to check
335 dnl ASSUMES argument is a math function with ONE parameter
337 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
338 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
339 AC_MSG_CHECKING([for $1 declaration])
340 if test x${glibcpp_cv_func_$1_use+set} != xset; then
341 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
344 AC_TRY_COMPILE([#include <math.h>],
346 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
350 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
351 if test x$glibcpp_cv_func_$1_use = x"yes"; then
358 dnl Check to see if the (math function) argument passed is
359 dnl 1) declared when using the c++ compiler
360 dnl 2) has "C" linkage
362 dnl Define HAVE_CARGF etc if "cargf" is declared and links
364 dnl argument 1 is name of function to check
366 dnl ASSUMES argument is a math function with TWO parameters
368 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
369 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
370 AC_MSG_CHECKING([for $1 declaration])
371 if test x${glibcpp_cv_func_$1_use+set} != xset; then
372 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
375 AC_TRY_COMPILE([#include <math.h>],
377 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
381 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
382 if test x$glibcpp_cv_func_$1_use = x"yes"; then
389 dnl Check to see if the (math function) argument passed is
390 dnl 1) declared when using the c++ compiler
391 dnl 2) has "C" linkage
393 dnl Define HAVE_CARGF etc if "cargf" is declared and links
395 dnl argument 1 is name of function to check
397 dnl ASSUMES argument is a math function with THREE parameters
399 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
400 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
401 AC_MSG_CHECKING([for $1 declaration])
402 if test x${glibcpp_cv_func_$1_use+set} != xset; then
403 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
406 AC_TRY_COMPILE([#include <math.h>],
408 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
412 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
413 if test x$glibcpp_cv_func_$1_use = x"yes"; then
420 dnl Check to see if the (stdlib function) argument passed is
421 dnl 1) declared when using the c++ compiler
422 dnl 2) has "C" linkage
424 dnl Define HAVE_STRTOLD if "strtold" is declared and links
425 dnl Define HAVE_STRTOF if "strtof" is declared and links
427 dnl argument 1 is name of function to check
429 dnl ASSUMES argument is a math function with TWO parameters
431 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
432 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
433 AC_MSG_CHECKING([for $1 declaration])
434 if test x${glibcpp_cv_func_$1_use+set} != xset; then
435 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
438 AC_TRY_COMPILE([#include <stdlib.h>],
440 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
444 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
445 if test x$glibcpp_cv_func_$1_use = x"yes"; then
452 dnl Because the builtins are picky picky picky about the arguments they take,
453 dnl do an explict linkage tests here.
454 dnl Check to see if the (math function) argument passed is
455 dnl 1) declared when using the c++ compiler
456 dnl 2) has "C" linkage
458 dnl Define HAVE_CARGF etc if "cargf" is declared and links
460 dnl argument 1 is name of function to check
462 dnl ASSUMES argument is a math function with ONE parameter
464 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
465 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
466 AC_MSG_CHECKING([for $1 declaration])
467 if test x${glibcpp_cv_func_$1_use+set} != xset; then
468 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
471 AC_TRY_COMPILE([#include <math.h>],
473 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
477 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
478 if test x$glibcpp_cv_func_$1_use = x"yes"; then
479 AC_MSG_CHECKING([for $1 linkage])
480 if test x${glibcpp_cv_func_$1_link+set} != xset; then
481 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
482 AC_TRY_LINK([#include <math.h>],
484 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
487 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
488 if test x$glibcpp_cv_func_$1_link = x"yes"; then
489 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
490 AC_DEFINE_UNQUOTED(${ac_tr_func})
497 dnl Check to see what builtin math functions are supported
499 dnl check for __builtin_abs
500 dnl check for __builtin_fabsf
501 dnl check for __builtin_fabs
502 dnl check for __builtin_fabl
503 dnl check for __builtin_labs
504 dnl check for __builtin_sqrtf
505 dnl check for __builtin_sqrtl
506 dnl check for __builtin_fsqrt
507 dnl check for __builtin_sinf
508 dnl check for __builtin_sin
509 dnl check for __builtin_sinl
510 dnl check for __builtin_cosf
511 dnl check for __builtin_cos
512 dnl check for __builtin_cosl
514 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
515 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
516 dnl Test for builtin math functions.
517 dnl These are made in gcc/c-common.c
518 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
519 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
520 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
521 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
522 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
524 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
525 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
526 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
528 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
529 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
530 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
532 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
533 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
534 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
536 dnl There is, without a doubt, a more elegant way to have these
537 dnl names exported so that they won't be stripped out of acconfig.h by
538 dnl autoheader. I leave this as an exercise to somebody less frustrated
539 dnl than I.... please email the libstdc++ list if you can figure out a
540 dnl more elegant approach (see autoconf/acgen.m4 and specifically
541 dnl AC_CHECK_FUNC for things to steal.)
543 if test x$dummyvar = x"yes"; then
544 AC_DEFINE(HAVE___BUILTIN_ABS)
545 AC_DEFINE(HAVE___BUILTIN_LABS)
546 AC_DEFINE(HAVE___BUILTIN_COS)
547 AC_DEFINE(HAVE___BUILTIN_COSF)
548 AC_DEFINE(HAVE___BUILTIN_COSL)
549 AC_DEFINE(HAVE___BUILTIN_FABS)
550 AC_DEFINE(HAVE___BUILTIN_FABSF)
551 AC_DEFINE(HAVE___BUILTIN_FABSL)
552 AC_DEFINE(HAVE___BUILTIN_SIN)
553 AC_DEFINE(HAVE___BUILTIN_SINF)
554 AC_DEFINE(HAVE___BUILTIN_SINL)
555 AC_DEFINE(HAVE___BUILTIN_FSQRT)
556 AC_DEFINE(HAVE___BUILTIN_SQRTF)
557 AC_DEFINE(HAVE___BUILTIN_SQRTL)
563 dnl Check to see what the underlying c library
564 dnl These checks need to do two things:
565 dnl 1) make sure the name is declared when using the c++ compiler
566 dnl 2) make sure the name has "C" linkage
567 dnl This might seem like overkill but experience has shown that it's not...
569 dnl Define HAVE_STRTOF etc if "strtof" is found.
570 dnl Define HAVE_STRTOLD etc if "strtold" is found.
572 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
573 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
574 ac_test_CXXFLAGS="${CXXFLAGS+set}"
575 ac_save_CXXFLAGS="$CXXFLAGS"
576 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
578 AC_CHECK_FUNCS(strtof)
579 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
581 CXXFLAGS="$ac_save_CXXFLAGS"
586 dnl Check to see what the underlying c library or math library is like.
587 dnl These checks need to do two things:
588 dnl 1) make sure the name is declared when using the c++ compiler
589 dnl 2) make sure the name has "C" linkage
590 dnl This might seem like overkill but experience has shown that it's not...
592 dnl Define HAVE_CARGF etc if "cargf" is found.
594 dnl GLIBCPP_CHECK_MATH_SUPPORT
595 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
596 ac_test_CXXFLAGS="${CXXFLAGS+set}"
597 ac_save_CXXFLAGS="$CXXFLAGS"
598 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
601 AC_CHECK_LIB(m, sin, libm="-lm")
605 dnl Check to see if certain C math functions exist.
606 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
607 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
608 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
609 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
610 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
611 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
612 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
614 dnl Check to see if basic C math functions have float versions.
615 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
616 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
617 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf)
618 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf)
619 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf)
620 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
621 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
622 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
625 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
626 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
628 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
629 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
630 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
631 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
632 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
640 dnl Check to see if basic C math functions have long double versions.
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
642 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
661 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
662 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
669 dnl Some runtimes have these functions with a preceding underscore. Please
670 dnl keep this sync'd with the one above. And if you add any new symbol,
671 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
672 dnl Check to see if certain C math functions exist.
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
681 dnl Check to see if basic C math functions have float versions.
682 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
683 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
684 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
707 dnl Check to see if basic C math functions have long double versions.
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
711 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
712 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
713 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
714 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
715 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
718 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
719 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
720 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
722 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
723 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
724 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
725 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
726 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
727 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
728 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
729 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
730 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
731 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
732 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
733 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
734 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
737 CXXFLAGS="$ac_save_CXXFLAGS"
742 dnl Check to see if there is native support for complex
744 dnl Don't compile bits in math/* if native support exits.
746 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
748 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
749 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
750 dnl Check for complex versions of math functions of platform.
751 AC_CHECK_HEADERS([complex.h])
752 AC_CHECK_LIB(m, main)
753 AC_REPLACE_MATHFUNCS(csqrt csqrtf nan hypot hypotf atan2f expf copysignf)
755 dnl Compile the long double complex functions only if the function
756 dnl provides the non-complex long double functions that are needed.
757 dnl Currently this includes copysignl and atan2l, which should be
758 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
759 USE_COMPLEX_LONG_DOUBLE=no
760 if test x$ac_cv_func_atan2l = x"yes" \
761 && test x$ac_cv_func_copysignl = x"yes"; then
762 USE_COMPLEX_LONG_DOUBLE=yes
763 AC_REPLACE_MATHFUNCS(csqrtl hypotl signbitl)
766 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
770 dnl Check to see what architecture and operating system we are compiling
771 dnl for. Also, if architecture- or OS-specific flags are required for
772 dnl compilation, pick them up here.
774 dnl GLIBCPP_CHECK_TARGET
775 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
776 . [$]{glibcpp_basedir}/configure.target
777 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
778 AC_MSG_RESULT(OS config directory is $os_include_dir)
779 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
784 dnl Check to see what the underlying c library's interface to ctype looks
785 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
786 dnl stuff makes sure the right bits from the clibrary get called.
788 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
789 dnl Depending on what is found, select various configure/*/ctype.cc
791 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
792 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
793 AC_CHECK_HEADER(ctype.h, [
795 dnl If doesn't match any specified, go with defaults.
798 dnl Test for <ctype> functionality -- GNU/Linux
799 AC_MSG_CHECKING([<ctype> for GNU/Linux])
800 AC_TRY_COMPILE([#include <ctype.h>],
803 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
804 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
805 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
806 ctype_linux=yes, ctype_linux=no)
807 AC_MSG_RESULT($ctype_linux)
808 if test $ctype_linux = "yes"; then
809 ctype_include_dir="config/os/gnu-linux"
813 dnl Test for <ctype> functionality -- FreeBSD 4.0
814 if test $ctype_default = "yes"; then
815 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
816 AC_TRY_COMPILE([#include <ctype.h>],
819 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
820 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
821 ctype_bsd=yes, ctype_bsd=no)
822 AC_MSG_RESULT($ctype_bsd)
823 if test $ctype_bsd = "yes"; then
824 ctype_include_dir="config/os/bsd/freebsd"
829 dnl Test for <ctype> functionality -- FreeBSD 3.4
830 if test $ctype_default = "yes"; then
831 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
832 AC_TRY_COMPILE([#include <ctype.h>],
835 { return _S + _R + _C + _U + _L + _A \
836 + _D + _P + _X + _G + __istype (a, 0);}], \
837 ctype_freebsd34=yes, ctype_freebsd34=no)
838 AC_MSG_RESULT($ctype_freebsd34)
839 if test $ctype_freebsd34 = "yes"; then
840 ctype_include_dir="config/os/bsd/freebsd"
845 dnl Test for <ctype> functionality -- NetBSD
846 if test $ctype_default = "yes"; then
847 AC_MSG_CHECKING([<ctype> for NetBSD])
848 AC_TRY_COMPILE([#include <ctype.h>],
851 { return _S + _C + _U + _L \
852 + _N + _P + _X + _tolower_tab_[a] + _toupper_tab_[a];}], \
853 ctype_netbsd=yes, ctype_netbsd=no)
854 AC_MSG_RESULT($ctype_netbsd)
855 if test $ctype_netbsd = "yes"; then
856 ctype_include_dir="config/os/bsd/netbsd"
861 dnl Test for <ctype> functionality -- Solaris 2.6 and up
862 if test $ctype_default = "yes"; then
863 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
864 AC_TRY_COMPILE([#include <ctype.h>],
867 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
868 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
869 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
870 ctype_solaris=yes, ctype_solaris=no)
871 AC_MSG_RESULT($ctype_solaris)
873 if test $ctype_solaris = "yes"; then
874 AC_MSG_CHECKING([ for version])
876 AC_TRY_COMPILE([#include <ctype.h>],
877 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
878 ctype_solaris26=yes, ctype_solaris26=no)
880 if test $ctype_solaris26 = "yes"; then
881 ctype_include_dir="config/os/solaris/solaris2.6"
882 AC_MSG_RESULT([Solaris 2.6])
885 ctype_include_dir="config/os/solaris/solaris2.7"
886 AC_MSG_RESULT([Solaris 7,8])
892 dnl Test for <ctype> functionality -- Solaris 2.5.1
893 if test $ctype_default = "yes"; then
894 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
895 AC_TRY_COMPILE([#include <ctype.h>],
898 { return _U + _L + _N + _S + _P + _C + _X + _B \
900 ctype_solaris25=yes, ctype_solaris25=no)
901 AC_MSG_RESULT($ctype_solaris25)
902 if test $ctype_solaris25 = "yes"; then
903 ctype_include_dir="config/os/solaris/solaris2.5"
908 dnl Test for <ctype> functionality -- AIX
909 if test $ctype_default = "yes"; then
910 AC_MSG_CHECKING([<ctype> for AIX])
911 AC_TRY_COMPILE([#include <ctype.h>],
914 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
915 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
916 + _VALC('a') + _IS('c', 0);}], \
917 ctype_aix=yes, ctype_aix=no)
918 AC_MSG_RESULT($ctype_aix)
919 if test $ctype_aix = "yes"; then
920 ctype_include_dir="config/os/aix"
925 dnl Test for <ctype> functionality -- IRIX
926 if test $ctype_default = "yes"; then
927 AC_MSG_CHECKING([<ctype> for IRIX])
928 AC_TRY_COMPILE([#include <ctype.h>],
931 { return _U + _L + _N + _S + _P + _C + _B + _X + \
932 _A + _PR + _G + _BL;}], \
933 ctype_irix=yes, ctype_irix=no)
934 AC_MSG_RESULT($ctype_irix)
935 if test $ctype_irix = "yes"; then
936 ctype_include_dir="config/os/irix"
941 dnl Test for <ctype> functionality -- newlib
942 if test $ctype_default = "yes"; then
943 AC_MSG_CHECKING([<ctype> for newlib])
944 AC_TRY_COMPILE([#include <ctype.h>],
947 { return _U + _L + _N + _S + _P + _C + _X + _B \
949 ctype_newlib=yes, ctype_newlib=no)
950 AC_MSG_RESULT($ctype_newlib)
951 if test $ctype_newlib = "yes"; then
952 ctype_include_dir="config/os/newlib"
957 if test $ctype_default = "yes"; then
958 ctype_include_dir="config/os/generic"
959 AC_MSG_WARN("Using default ctype headers.")
966 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
967 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
968 dnl must have been previously checked.)
970 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
971 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
973 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
974 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
975 if test x$enable_c_mbchar != xno; then
977 dnl Sanity check for existence of ISO C99 headers for extended encoding.
978 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
979 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
981 dnl Only continue checking if the ISO C99 headers exist.
982 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
984 dnl Test wchar.h for mbstate_t, which is needed for char_traits
986 AC_MSG_CHECKING([for mbstate_t])
987 AC_TRY_COMPILE([#include <wchar.h>],
988 [mbstate_t teststate;],
989 use_native_mbstatet=yes, use_native_mbstatet=no)
990 AC_MSG_RESULT($use_native_mbstatet)
992 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
993 dnl numeric_limits can instantiate type_traits<wchar_t>
994 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
995 AC_TRY_COMPILE([#include <wchar.h>],
996 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
997 has_wchar_minmax=yes, has_wchar_minmax=no)
998 AC_MSG_RESULT($has_wchar_minmax)
1000 dnl Test wchar.h for WEOF, which is what we use to determine whether
1001 dnl to specialize for char_traits<wchar_t> or not.
1002 AC_MSG_CHECKING([for WEOF])
1005 #include <stddef.h>],
1007 has_weof=yes, has_weof=no)
1008 AC_MSG_RESULT($has_weof)
1010 dnl Tests for wide character functions used in char_traits<wchar_t>.
1011 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1012 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1014 AC_MSG_CHECKING([for ISO C99 wchar_t support])
1015 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1016 && test x"$ac_wfuncs" = xyes; then
1017 ac_isoC99_wchar_t=yes
1019 ac_isoC99_wchar_t=no
1021 AC_MSG_RESULT($ac_isoC99_wchar_t)
1023 dnl Use iconv for wchar_t to char conversions. As such, check for
1024 dnl X/Open Portability Guide, version 2 features (XPG2).
1025 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1026 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1028 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1029 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1030 ac_save_LIBS="$LIBS"
1031 LIBS="$LIBS $libiconv"
1033 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1034 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1036 LIBS="$ac_save_LIBS"
1038 AC_MSG_CHECKING([for XPG2 wchar_t support])
1039 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1040 && test x"$ac_XPG2funcs" = xyes; then
1045 AC_MSG_RESULT($ac_XPG2_wchar_t)
1047 dnl At the moment, only enable wchar_t specializations if all the
1048 dnl above support is present.
1049 AC_MSG_CHECKING([for enabled wchar_t specializations])
1050 if test x"$ac_isoC99_wchar_t" = xyes \
1051 && test x"$ac_XPG2_wchar_t" = xyes; then
1052 libinst_wstring_la="libinst-wstring.la"
1053 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1054 AC_MSG_RESULT("yes")
1056 libinst_wstring_la=""
1059 AC_SUBST(libinst_wstring_la)
1062 AC_MSG_WARN([<wchar.h> not found])
1066 dnl Wide characters disabled by the user. Maybe print a warning?
1073 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1074 dnl __complex__ float support.
1076 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
1078 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1079 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
1080 dnl gcc-2.95.x when using the library, unless we define the default copy
1081 dnl ctor in the specializations of complex<>.
1083 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
1084 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
1085 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
1086 AC_REQUIRE([AC_PROG_CXX])
1088 AC_MSG_CHECKING([for GNU C++ __complex__ support])
1089 AC_CACHE_VAL(glibcpp_cv_complex, [
1092 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1093 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1094 [ dcomplex x; f(x); ],
1095 glibcpp_cv_complex=ok,
1096 glibcpp_cv_complex=buggy
1100 AC_MSG_RESULT($glibcpp_cv_complex)
1101 if test $glibcpp_cv_complex = buggy; then
1102 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1105 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1106 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1110 cat > conftest.h <<EOB
1112 // Check for buggy __complex__ that causes ICE in most versions of egcs
1113 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1115 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
1116 // more info on the bug itself.
1121 __complex__ float m_value;
1122 float_complex (float = 0.0f, float = 0.0f);
1123 float_complex (__complex__ float val) : m_value (val) {}
1124 float_complex foo (const float_complex &val)
1125 { return float_complex (~val.m_value); }
1128 AC_TRY_COMPILE([#include "conftest.h"], ,
1129 glibcpp_cv_float_complex=ok,
1130 glibcpp_cv_float_complex=buggy
1134 AC_MSG_RESULT($glibcpp_cv_float_complex)
1135 if test $glibcpp_cv_float_complex = buggy; then
1136 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1142 dnl Check for special debugging mode; not for production use.
1144 dnl GLIBCPP_ENABLE_DEBUG
1145 dnl --enable-debug sets '-ggdb3 -O0'.
1146 dnl --disable-debug sets '-g' and whatever optimization options the
1147 dnl compiler can handle.
1148 dnl + --enable-maintainer-mode automatically defaults this to on.
1149 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1150 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1151 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1152 dnl defaults to `no'.
1153 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1154 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1155 AC_ARG_ENABLE(debug,
1156 changequote(<<, >>)dnl
1157 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1158 changequote([, ])dnl
1159 [case "${enableval}" in
1160 yes) enable_debug=yes ;;
1161 no) enable_debug=no ;;
1162 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1164 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1166 dnl Option parsed, now set things appropriately
1167 case "${enable_debug}" in
1169 DEBUG_FLAGS='-O0 -ggdb3'
1175 AC_SUBST(DEBUG_FLAGS)
1180 dnl Check for "unusual" flags to pass to the compiler while building.
1182 dnl GLIBCPP_ENABLE_CXX_FLAGS
1183 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1184 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1185 dnl Somehow this same set of flags must be passed when [re]building
1187 dnl --disable-cxx-flags passes nothing.
1188 dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1189 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1190 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html
1191 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1192 dnl If "default flags" is an empty string (or "none"), the effect is
1193 dnl the same as --disable or --enable=no.
1194 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1195 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1196 AC_ARG_ENABLE(cxx-flags,
1197 changequote(<<, >>)dnl
1198 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1199 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1200 changequote([, ])dnl
1201 [case "x$enableval" in
1203 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1205 enable_cxx_flags='' ;;
1207 enable_cxx_flags="$enableval" ;;
1209 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1211 dnl Thinko on my part during design. This kludge is the workaround.
1212 if test "$enable_cxx_flags" = "none"; then
1213 enable_cxx_flags='';
1216 dnl Run through flags (either default or command-line) and set anything
1217 dnl extra (e.g., #defines) that must accompany particular g++ options.
1218 if test -n "$enable_cxx_flags"; then
1219 for f in $enable_cxx_flags; do
1223 *) # and we're trying to pass /what/ exactly?
1224 AC_MSG_ERROR([compiler flags start with a -]) ;;
1228 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1229 AC_SUBST(EXTRA_CXX_FLAGS)
1234 dnl Check for which I/O library to use: libio, or something specific.
1236 dnl GLIBCPP_ENABLE_CSTDIO
1237 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1239 dnl default is stdio
1241 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1242 AC_MSG_CHECKING([for cstdio to use])
1243 AC_ARG_ENABLE(cstdio,
1244 [ --enable-cstdio enable stdio for target io package. (default)
1245 --enable-cstdio=LIB use LIB target-speific io package.],
1246 if test x$enable_cstdio = xno; then
1249 enable_cstdio=stdio)
1251 enable_cstdio_flag=$enable_cstdio
1253 dnl Check if a valid I/O package
1254 case x${enable_cstdio_flag} in
1256 CSTDIO_H=config/c_io_libio.h
1257 CSTDIO_CC=config/c_io_libio.cc
1258 AC_MSG_RESULT(libio)
1260 # see if we are on a system with libio native (ie, linux)
1261 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1263 # Need to check and see what version of glibc is being used. If
1264 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1265 # compile most of libio for linux systems.
1266 if test x$has_libio = x"yes"; then
1269 AC_MSG_CHECKING([for glibc version >= 2.2])
1270 AC_EGREP_CPP([ok], [
1271 #include <features.h>
1272 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1275 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1276 AC_MSG_RESULT($glibc_satisfactory)
1280 # XXX at the moment, admit defeat and force the recompilation
1281 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1282 glibc_satisfactory=no
1284 if test x$glibc_satisfactory = x"yes"; then
1289 # bkoz XXX need to add checks to enable this
1290 # pme XXX here's a first pass at such a check
1291 if test x$enable_c_mbchar != xno; then
1299 # Using libio, but <libio.h> doesn't exist on the target system. . .
1301 # bkoz XXX need to add checks to enable this
1302 # pme XXX here's a first pass at such a check
1303 if test x$enable_c_mbchar != xno; then
1310 xstdio | x | xno | xnone | xyes)
1312 CSTDIO_H=config/c_io_stdio.h
1313 CSTDIO_CC=config/c_io_stdio.cc
1314 AC_MSG_RESULT(stdio)
1316 # We're not using stdio.
1319 # Wide characters are not supported with this package.
1323 echo "$enable_cstdio is an unknown io package" 1>&2
1327 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1328 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1330 # 2000-08-04 bkoz hack
1331 CCODECVT_C=config/c_io_libio_codecvt.c
1332 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1333 # 2000-08-04 bkoz hack
1335 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1336 test "$need_libio" = yes || test "$need_wlibio" = yes)
1337 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1338 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1339 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1340 libio_la=../libio/libio.la
1349 dnl Check for which threading library to use.
1351 dnl GLIBCPP_ENABLE_THREADS
1352 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1354 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1355 dnl libio. Any actual thread package will enable it.
1357 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1358 dnl Note this comes from the gcc/config.in and libjava/config.in
1359 dnl Efforts should be made to keep this in sync.
1360 AC_MSG_CHECKING([for threads package to use])
1361 AC_ARG_ENABLE(threads,
1362 [ --enable-threads enable thread usage for target GCC.
1363 --enable-threads=LIB use LIB thread package for target GCC.],
1364 if test x$enable_threads = xno; then
1369 enable_threads_flag=$enable_threads
1371 dnl Check if a valid thread package
1372 case x${enable_threads_flag} in
1375 target_thread_file='single'
1379 target_thread_file='posix'
1381 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1382 xsolaris | xwin32 | xdce | xvxworks)
1383 target_thread_file=$enable_threads_flag
1386 echo "$enable_threads is an unknown thread package" 1>&2
1391 dnl Check for thread package actually supported in libstdc++
1393 case "$target_thread_file" in
1395 THREADH=threads-no.h
1398 THREADH=threads-posix.h
1400 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1401 AC_MSG_ERROR(thread package $THREADS not yet supported)
1404 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1407 AC_MSG_RESULT($THREADH)
1409 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1410 if test $THREADH != threads-no.h; then
1411 AC_DEFINE(_GLIBCPP_USE_THREADS)
1416 dnl Enable atomic locking
1417 dnl GLIBCPP_ENABLE_ATOMICITY
1418 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1419 AC_MSG_CHECKING([for atomicity.h])
1420 # We have ATOMICITY already from GLIBCPP_CONFIGURE
1421 if test "$ATOMICITYH" = "config/cpu/generic"; then
1422 AC_MSG_WARN([No ATOMICITY settings found, using generic atomic ops.])
1424 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1425 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1430 dnl Check for template specializations for the 'long long' type extension.
1432 dnl GLIBCPP_ENABLE_LONG_LONG
1433 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1434 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1435 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1436 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1437 dnl defaults to `no'.
1438 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1440 dnl GLIBCPP_ENABLE_LONG_LONG
1441 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1442 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1444 AC_ARG_ENABLE(long-long,
1445 changequote(<<, >>)dnl
1446 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1447 changequote([, ])dnl
1448 [case "$enableval" in
1449 yes) enable_long_long=yes ;;
1450 no) enable_long_long=no ;;
1451 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1453 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1455 # Allow use of os-dependent settings, so that macros that turn on
1456 # C99 capabilities can be defined and used in a consistent way.
1457 OS_INC_PATH=${srcdir}/$os_include_dir
1458 ac_test_CFLAGS="${CFLAGS+set}"
1459 ac_save_CFLAGS="$CFLAGS"
1460 CFLAGS="-I$OS_INC_PATH"
1462 # Check for the existence of functions used if long long is enabled.
1463 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1464 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1466 # Check for lldiv_t, et. al.
1467 AC_MSG_CHECKING([for lldiv_t declaration])
1468 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1469 AC_TRY_COMPILE([#include <bits/os_defines.h>
1470 #include <stdlib.h>],
1472 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1474 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1475 if test x$glibcpp_lldiv_t_use = x"yes"; then
1476 AC_DEFINE(HAVE_LLDIV_T)
1479 AC_MSG_CHECKING([for enabled long long])
1480 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1481 enable_long_long=no;
1483 AC_MSG_RESULT($enable_long_long)
1485 # Option parsed, now set things appropriately
1486 if test x"$enable_long_long" = xyes; then
1487 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1491 CFLAGS="$ac_save_CFLAGS"
1496 dnl Check for whether or not to do shadowed C headers.
1498 dnl GLIBCPP_ENABLE_SHADOW
1499 dnl --enable-cshadow-headers [does stuff].
1500 dnl --disable-cshadow-headers [does not do stuff].
1501 dnl + This will eventually need to be on by default.
1502 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1503 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1504 dnl defaults to `no'.
1505 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1506 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1507 AC_MSG_CHECKING([for enabled cshadow headers])
1508 AC_ARG_ENABLE(cshadow-headers,
1509 changequote(<<, >>)dnl
1510 << --enable-cshadow-headers construct "shadowed" C header files for
1511 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1513 [case "$enableval" in
1514 yes) enable_cshadow_headers=yes
1516 no) enable_cshadow_headers=no
1518 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1521 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1522 AC_MSG_RESULT($enable_cshadow_headers)
1524 dnl Option parsed, now set things appropriately
1525 dnl NB: these things may be duplicated in c++config.h as well.
1526 case "$enable_cshadow_headers" in
1528 CSHADOW_FLAGS="-fno-builtin"
1529 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1530 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1534 C_INCLUDE_DIR='${top_srcdir}/include/c'
1538 AC_SUBST(CSHADOW_FLAGS)
1539 AC_SUBST(C_INCLUDE_DIR)
1540 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1545 dnl Check for wide character support. Has the same effect as the option
1546 dnl in gcc's configure, but in a form that autoconf can mess with.
1548 dnl GLIBCPP_ENABLE_C_MBCHAR
1549 dnl --enable-c-mbchar requests all the wchar_t stuff.
1550 dnl --disable-c-mbchar doesn't.
1551 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1552 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1553 dnl defaults to `no'.
1554 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1555 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1556 AC_ARG_ENABLE(c-mbchar,
1557 changequote(<<, >>)dnl
1558 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1559 changequote([, ])dnl
1560 [case "$enableval" in
1561 yes) enable_c_mbchar=yes ;;
1562 no) enable_c_mbchar=no ;;
1563 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1565 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1566 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1571 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1573 dnl GLIBCPP_INCLUDE_DIR
1575 dnl TOPLEVEL_INCLUDES
1576 dnl LIBMATH_INCLUDES
1577 dnl LIBSUPCXX_INCLUDES
1579 dnl CSHADOW_INCLUDES
1581 dnl GLIBCPP_EXPORT_INCLUDE
1582 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1583 # Root level of the include sources.
1584 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1586 # Can either use include/c or include/c_std to grab "C" headers. This
1587 # variable is set to the include directory currently in use.
1588 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_SHADOW
1590 # Passed down for canadian crosses.
1591 if test x"$CANADIAN" = xyes; then
1592 TOPLEVEL_INCLUDES='-I$(includedir)'
1595 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1597 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1599 #if GLIBCPP_NEED_LIBIO
1600 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1602 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1605 #if GLIBCPP_USE_CSHADOW
1606 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1607 # -I$(top_blddir)/cshadow'
1609 CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1612 # Now, export this to all the little Makefiles....
1613 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1614 AC_SUBST(TOPLEVEL_INCLUDES)
1615 AC_SUBST(LIBMATH_INCLUDES)
1616 AC_SUBST(LIBSUPCXX_INCLUDES)
1617 AC_SUBST(LIBIO_INCLUDES)
1618 AC_SUBST(CSHADOW_INCLUDES)
1623 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1625 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1626 # Optimization flags that are probably a good idea for thrill-seekers. Just
1627 # uncomment the lines below and make, everything else is ready to go...
1628 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1630 AC_SUBST(OPTIMIZE_CXXFLAGS)
1632 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1633 AC_SUBST(WARN_FLAGS)
1637 # Check whether LC_MESSAGES is available in <locale.h>.
1638 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1640 # This file file be copied and used freely without restrictions. It can
1641 # be used in projects which are not available under the GNU Public License
1642 # but which still want to provide support for the GNU gettext functionality.
1643 # Please note that the actual code is *not* freely available.
1647 AC_DEFUN(AC_LC_MESSAGES, [
1648 AC_CHECK_HEADER(locale.h, [
1649 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1650 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1651 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1652 if test $ac_cv_val_LC_MESSAGES = yes; then
1653 AC_DEFINE(HAVE_LC_MESSAGES)
1659 # Check for functions in math library.
1660 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1662 # This file can be copied and used freely without restrictions. It can
1663 # be used in projects which are not available under the GNU Public License
1664 # but which still want to provide support for the GNU gettext functionality.
1665 # Please note that the actual code is *not* freely available.
1669 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1670 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1671 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1672 AC_SUBST(LIBMATHOBJS)dnl
1676 # Check for string functions.
1677 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1679 # This file can be copied and used freely without restrictions. It can
1680 # be used in projects which are not available under the GNU Public License
1681 # but which still want to provide support for the GNU gettext functionality.
1682 # Please note that the actual code is *not* freely available.
1686 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1687 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1688 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1689 AC_SUBST(LIBSTRINGOBJS)dnl
1693 dnl This macro searches for a GNU version of make. If a match is found, the
1694 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1695 dnl set to "#". This is useful for including a special features in a Makefile,
1696 dnl which cannot be handled by other versions of make. The variable
1697 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1698 dnl the empty string otherwise.
1700 dnl Here is an example of its use:
1702 dnl Makefile.in might contain:
1704 dnl # A failsafe way of putting a dependency rule into a makefile
1706 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1708 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1709 dnl @ifGNUmake@ include $(DEPEND)
1710 dnl @ifGNUmake@ endif
1712 dnl Then configure.in would normally contain:
1714 dnl CHECK_GNU_MAKE()
1715 dnl AC_OUTPUT(Makefile)
1717 dnl Then perhaps to cause gnu make to override any other make, we could do
1718 dnl something like this (note that GNU make always looks for GNUmakefile first):
1720 dnl if ! test x$_cv_gnu_make_command = x ; then
1721 dnl mv Makefile GNUmakefile
1722 dnl echo .DEFAULT: > Makefile ;
1723 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1726 dnl Then, if any (well almost any) other make is called, and GNU make also
1727 dnl exists, then the other make wraps the GNU make.
1729 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1730 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1732 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1733 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1734 dnl #### conditional's subshell (" --version" is not a command), using a
1735 dnl #### different option to grep(1).
1738 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1739 _cv_gnu_make_command='' ;
1740 dnl Search all the common names for GNU make
1741 for a in "${MAKE:-make}" make gmake gnumake ; do
1742 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1744 _cv_gnu_make_command=$a ;
1749 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1750 dnl string, '#' otherwise
1751 if test "x$_cv_gnu_make_command" != "x" ; then
1759 sinclude(../libtool.m4)
1760 dnl The lines below arrange for aclocal not to bring an installed
1761 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1762 dnl add a definition of LIBTOOL to Makefile.in.
1763 ifelse(,,,[AC_SUBST(LIBTOOL)
1764 AC_DEFUN([AM_PROG_LIBTOOL])
1765 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1766 AC_DEFUN([AC_PROG_LD])